baber/WOPTO huggingface dataset:
Patent GB-818064-A (GB)
Title: Improvements in or relating to machine tools having boring or drilling heads
IPC: B23Q5/32
Filed: 1955-11-23
Abstract: 818,064. Boring- and milling-machine details. DECKEL, H., and DECKEL, F. W. Nov. 23, 1955 [Dec. 23, 1954 (2)], No. 33567/55. Class 83 (3). In a machine-tool a boring- or drilling-head 24 comprises a shaft 56 for feeding the drillspindle 26 and arranged co-axially with the axis about which the head is adjustable. As depicted, the head is mounted on the spindle slide 12 of a milling-machine driven by an electric motor 154, Fig. 7, through three sets of changespeed gears 160, 166, 168 housed in a column 10 and controlled by a handle 176 and a wheel 178, a gear 174 in the spindle-slide 12 engaging a toothed cylinder 172 in the column. The slide is controlled by a hand wheel 14, and a further slide 20 is movable vertically on the column. Clamps 60 in an annular slot 62 in the head secure it, following angular adjustment, to the end of a gear-box 23, by which the head is attached to slide 12. The gear-box, housing a change-speed gear 72a ... 72c, 74a ... 74c and a reversing-gear 90, 94, 98, provides for powerfeed of the drill and fine hand-feed through a hand wheel 152, coarse hand-feed being effected by a lever 148 which may be keyed to the end of a shaft 150 carrying a helical-gear 116 meshing with a rack 118 on the spindle-sleeve 27. Drill-head driving and feeding-mechanism.- The drive is received by a gear 28, Fig. 2, meshing with the gear 174 and transmitted to the drilling-spindle 26, through a shaft 30, gears 32, 34, 36, 38 and further change-speed gears 42a, 42b, 44a, 44b controlled by a hand wheel 48. Power feed is provided by a worm 64, on shaft 30, driving a worm-wheel 66 coupled to a gear 68, Fig. 3, in mesh with a gear 70 through which the change-speed gearing 72a ... 72c, 74a ... 74c is driven. Gears 72a . . . 72c are selectively engaged by a hand wheel 88, Fig. 2, which shifts these gears, through a crank-pin 82 sliding in a slot 80 in a lever 78 as it rocks the lever, and a yoke embracing gear 72b. Gear 74a meshes with the gear 90, and gear 74c is connected to the gear 94, through an intermediate gear 92, Fig. 4. Either of the oppositelyrotating-gears 90, 94 of the reversing-gear drives a shaft 96, through a dog-clutch operated by a slidable sleeve 130 carrying a pin 134 which engages a cam-groove 128 in a shaft 126 rotated through gears 122, 124, controlled by a hand wheel 120. A gear 100 on shaft 96 meshing with a gear 102, Fig. 3, drives a wormgear 104, 106, the worm-wheel 106 of which is connected to the feed-shaft 56, Fig. 2, by a dogclutch 110 disengaged from the worm-wheel by the inturned end of an otherwise circular camgroove 138 in the hand wheel 120, Fig. 3. A follower 140 in the groove rocks a lever 142 and a pin 146, which engages a groove 147 in the clutch 110, about a pivot 144 to disengage the clutch. A helical gear 114 on the feed-shaft 56 meshes with the helical-feed-pinion 116, and the hand wheel 152 for fine feed is keyed to the shaft 96. Catches may be provided to lock the controls in the various settings.
Patent GB-641620-A (GB)
Title: Improvements in or relating to machines for thinning roots or other vegetables
IPC: A01B41/02
Filed: 1947-12-20
Abstract: 641,620. Agricultural implements. BURRELL, F. M., BURRELL, W. E and BURRELL, E. C. Dec. 20, 1947, No. 33708. [Class 6(i)] A gapping machine comprises a wheeled chassis 1 on which a hoe blade 23 is transversely reciprocated, the hoe stem 22 being vertically slidable in a tube 21 and carrying a roller 28 which runs in a slot 29 in a guide plate 30. The tube 21 forms part of a carrier 20 pivoted at 18 and connected by links 24, 25 to a cam-follower 8 running in a sinuous groove 7 in a cam 6 clutched to the land wheel axle 4. For adjusting the working depth, the guide plate 30 is carried on links 33, 33a suspended from a cross-shaft 36, and raisable by a lever and detent 35, 39. The clutch between the cam 6 and wheel axle is controlled by a lever 41.
Patent GB-367008-A (GB)
Title: Improvements in and relating to tachometers
IPC: G01P3/10
Filed: 1930-11-08
Abstract: 367,008. Periodic-counter speed indicators. SZALKAY, L., 7, Erno-Utca, Budapest. Nov. 8, 1930, No. 33716. [Class 106 (iii).] A periodic counter type speedometer has a pointer actuated by a driver which travels in a guide, the width of which, and consequently the friction of the driver in the guide, is controlled by a revolving part of the speedometer, e.g. the time shaft, for arresting and releasing the driver. The usual member 22, Figs. 1 and 2, intermittently moving upwards and downwards on the shaft 36 actuates the prismatic driver 13, through the stop 37, which in turn actuates the pointer 24. The driver 13 moves in a variable width guide formed by the side 14 of a slot 12 and the side of a prismatic bar 15, one end of which is connected to an arm 17 pivoted on the pin 16 in the panel 11 and the other end of which is connected to one arm 19 of a bell-crank lever pivoted on the pin 18, the arm 19 being loaded by the spring 20 and the other arm 25 being acted upon by a cam disc 26 driven by clockwork in known manner by the rotating shaft 36 to periodically move to the right the arm 25 and the bar 15 to release the driver 13 which is normally prevented from falling but not from being moved upwards by the member 22 through the friction between the parts 14, 15. In the modification shown in Fig. 3 the member 22 acts only the driver 29 which actuates the driver 28 through the projection 35, the driver 28 operating the pointer 31. In this case there are two movable guide-bars 32, 34, the other sides of the variable width guides being formed by the central stationary bar 33. After the member 22 has descended the cam disc 26 releases the driver 29 and then the driver 28.
Patent GB-1422770-A (GB)
Title: Colour filter devices for photographic printing rear spot guide fog lamp
IPC: G02B7/00
Filed: 1972-01-20
Abstract: 1422770 Colour filter J T JONES 19 March 1973 [20 Jan 1972] 33874/71 Heading G2J A colour filter device for colour reversal photographic printing comprises a wheel rotatably mounted on a support and comprising three separate elements containing optical filters A, B, C respectively coloured blue, green and red, the elements being relatively adjustable to vary the proportions of the colours. Each element covers half a circle, so that the element A, for example, comprises a clear blue portion 14, and portions 18, 19 overlapping the zones C, B, and the three elements are mounted on a central boss about which they are independently moveable, being locked in adjusted position or held by friction.
Patent GB-1493886-A (GB)
Title: Ceramic compositions
IPC: C04B35/453
Filed: 1976-06-18
Abstract: 1493886 Varistor composition GENERAL ELECTRIC CO Ltd 18 June 1976 [14 Aug 1975] 33881/75 Heading CIJ [Also in Division H1] A varistor composition consists of 60-78 mole per cent ZnO, 15-35 mole per cent of CaO and/or MgO and optionally SrO, 0À2-5 mole per cent Bi 2 O 3 , 0-2À0 mole per cent SiO 2 , and 0À2-5À0 mole per cent of an additive metal oxide component composed of one or more of CoO, MnO 2 , Sb 2 O 3 , Cr 2 O 3  and SnO 2 , the additive component either including at least 0À1 mol per cent Cr 2 O 3  and at least 0À1 mol per cent Sb 2 O 3  or including at least 0À2 mol per cent SnO 2 .
Patent GB-854977-A (GB)
Title: Improvements in or relating to the manufacture of halogenated organic compounds
Filed: 1957-10-30
Abstract: A cyclic multistage process for the production of 2,3-dichloro-1,4-naphthaquinone comprises reacting in a first stage 1,4-naphthaquinone with chlorine in the absence of catalytically active material and in the presence of an inert anhydrous water-immiscible liquid medium and at a temperature not exceeding 45 DEG C. to form 1,4-naphthaquinone dichloride, adding a metal halide catalyst, or a metal which forms a metal halide under the reaction conditions, and converting the 1,4-naphthaquinone dichloride to 2,3-dichloro -1,4-naphthaquinone at a temperature above 50 DEG C., recovering the 2,3-dichloro-1,4-naphthaquinone, and recycling the mother liquor and catalyst to the first stage, the catalyst being inactivated by addition of water and the excess water being removed by addition of a dehydrating agent before the mother liquor is recycled.  The preferred inert liquid medium is nitrobenzene and the preferred metal halide is iron or aluminium chloride.  If desired, iron powder be may added to the reaction mass at the beginning of the process, since the conditions during the first stage are such that substantially no reaction occurs between the iron and the chlorine, but in the subsequent stage ferric chloride is formed and this functions as the catalyst.  On completion of the reaction, the product, 2,3-dichloro-1,4-naphthaquinone is obtained as yellow crystals which may be separated from the mother liquor by filtration. Water is then added to the mother liquor to convert the ferric chloride to its hexahydrate and the excess water is removed by treatment with an insoluble drying agent, e.g. waterfree calcium chloride or sodium sulphate.  The liquor may then be recycled to the first stage.  If the reaction medium after having been re-used several times should become too concentrated in regard to accumulated inactivated catalyst, this may be extracted by a solvent e.g. water which is immiscible with the reaction medium.
Patent GB-467029-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02P5/50
Filed: 1935-12-09
Abstract: 467,029. Actuation of switches. BRITISH THOMSON-HOUSTON CO., Ltd., and OVENS, G. Dec. 9, 1935, No. 34094. [Class 38 (v)] [Also in Group XXXV] The speeds of motors 2, each driving a machine 1, are maintained in a definite relationship by associated synchronous dynamo-electric machines 8 which correct any excess or deficiency of power, the machine 8 being mutually' synchronized through the master machine 14 ; in each motor system a small unexcited synchronous machine 18, mechanically coupled to its dynamo-electric machine 8, forms a discriminating device sensitive to said excess or deficiency of power and controls a reversible pilot motor 24 by which a rheostat 3 or other device in the field of the motor 2 is regulated to vary its power as required. The discriminating device 18 does not, however, effect operation of the pilot motor 24 until the amount of the excess or deficiency as measured by the current flow in either direction in the circuit of machine 8, is sufficient to operate relay 25. The D.C. bus-bars 4, 5 supply the rotors of the main motors 2 while bus-bars 15, 16 supply their fields, also the fields of machine 8. A D.C. motor 17 supplied from bus-bars 4, 5 and 15, 16 drives polyphase generators 14, 22 having their fields supplied from bus-bars 15, 16. The generators 14, 22 supply synchronized polyphase current to the machines 8 and the discriminating device 18 respectively. Each device 18 consists of a rotor driven by the machine 8 and a polyphase stator free to rotate within limits. When the power developed by motor 2 is insufficient to drive load 1, the deficiency is made up by machine 8, the rotor of which then lags behind master machine 14.. The stator of device 18 will then swing backward, closing circuit of pilot motor 24 to adjust rheostat 3 in the proper direction to regulate the field of main motor 2, provided that the amount of current to be made up is sufficient to operate relay 25. The action is reversed when an excess of power is developed by motor 2. Specifications 158,468, [Class 110 (iii)], 186,470, [Class 38 (iii)], and 448,339, [Group XXXV], are referred to.
Patent GB-953038-A (GB)
Title: An arrangement on a track rail for braking rail vehicles
IPC: B61L17/02
Filed: 1962-09-05
Abstract: 953,038. Railway rails. J. HUBER. Sept. 5, 1962 [Sept. 28, 1961], No. 34095/62. Heading E1G. [Also in Divisions B7 and F2] In a device for braking and/or accelerating rail vehicles (see Division F2) a rail track1 is shaped to provide a surface 10 to receive a part or all of the tread of a wheel 9, and a longitudinally extending groove 01 which receives the wheel flange and in which are disposed electric conductors 2, and one or more brake rails 7, 8 mounted on one or both side limbs 5, 6 of the track for transverse sliding movement under the influence of the magnetic field produced when current flows through the conductors, whereby when a wheel passes through the device and a current is flowing the or each brake rail is moved by the magnetic field into contact with the wheel to complete the magnetic circuit through the wheel for eddy current braking, and to apply further braking to the wheel by the friction produced. Brake rails 7, 8 are preferably provided on both sides of the wheel, as shown, and each consists of a number of relatively short sections, adjacent sections 7, 7<SP>1</SP> and 8, 8<SP>1</SP> being joined by interengaging portions 13, 14. To prevent the brake rails being knocked off by a passing wheel when the current is switched off they are retained and guided by rod and bracket structures 12 secured to the side limbs 5, 6, an eye 11 secured to the brake rail being threaded on the rod and the bracket acting as a stop to limit movement away from the wheel.
Patent GB-1147648-A (GB)
Title: Improvements in and relating to winder drive control
Inventor: TOFT JOHN GORDON
IPC: H02P5/52
Filed: 1965-08-11
Abstract: 1,147,648. Automatic speed control. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 13, 1966 [Aug.11, 1965], No.34386/65. Heading G3R. [Also in Division H2] Winding drums are separately driven by motors 2, 2', supplied by generators 3, 3', which are adapted to operate as motors for braking the drums. The generator field windings 4, 4' are supplied from power amplifiers 5, 5', whose inputs are derived through pre-amplifiers 6, 6', from master unit 7. The latter receives a common command signal through ramp function circuit 9. Tachometer generators 10, 10', are coupled to the motors to supply feedback signals to mixing circuits in the unit 7 whereby each of the drives is controlled individually in accordance with the command signal. Selsyns 11, 11' are coupled to the motors and their outputs are applied to a phase-sensitive circuit 12 which feeds a signal to the unit 7 so as to maintain a predetermined phase relationship between the motors.
Patent GB-1182055-A (GB)
Title: Fluid Flow Control Device
IPC: F15B13/042
Filed: 1968-07-18
Abstract: 1,182,055. Valves. ROSS OPERATING VALVE CO. 18 July, 1968 [30 Oct., 1967], No. 34396/68. Heading F2V. Control of flow between a supply port 25, a working port 28 and an exhaust port 29 is effected by a valve comprised of two parts, namely 36 and 42, the actual controlling movement of these parts being determined by the nature of a signal pressure applied to a port 52. In the state of the valve shown, the supply port is closed by valve 36, which valve is urged against its seat 35 by a spring 37, and the working port 28 is connected to exhaust 29 via a radial passage 41, an axially and then radially extending passage 47, 48 formed in the lower end of the other valve member 42, and finally through a further radial passage 51, such communication between ports 28 and 29 being made possible by a spring 44 which acts on member 42, and by the absence of a positive signal pressure in port 52 which permits a chamber 21, formed at the top end of the piston, to be exhausted to atmosphere via passages 20 and 22 faster than it can be supplied via passage 53 either from the inlet 25 and the passage 27 or from a separate constant source connected to port 26. Upon applying a positive signal to port52, a diaphragm 15 and hence a valve member 19 are caused to move downwardly until member 19 closes passage 20. The consequential pressure build up in chamber 21 forces member 42 to move downwardly until it engages member 36, at which stage the valve is in a neutral position and ports 28 and 29 are disconnected from one another, and then to displace member 36 from its seat so connecting ports 25 and 28.
Patent GB-301463-A (GB)
Title: Improvements in grinding machines or the like
IPC: B24B55/06
Filed: 1928-11-22
Abstract: 301,463. Jung, K. Nov. 30, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Dust, confining and removing.-The filter i which cleans the dust laden air drawn from a grinding- wheel by a fan h is combined with the grinding machine so as to be moved with it. The filter may be suspended from the fan outlet as shown, or supported from the base of the machine.
Patent GB-1438390-A (GB)
Title: Substituted norbornenes and method for their preparation
IPC: C07D295/182
Filed: 1973-10-30
Abstract: 1438390 Substituted norbornenes KOHJIN CO Ltd 30 Oct 1973 [31 Oct 1972 1 Nov 1972] 34487/75 Divided out of 1438389 Heading C2C The invention comprises compounds of the general Formula I wherein R<SP>1</SP> represents a hydrogen atom or a methyl group; and one of R<SP>2</SP> and R<SP>3</SP> represents a hydrogen atom and the other is an alkylaminoalkyl group, or R<SP>2</SP> and R<SP>3</SP> together with the adjacent nitrogen atom form a heterocyclic ring. The compounds of Formula I may be prepared by reacting a Diels-Alder adduct formed from cyclopentadiene and methacrylic or acrylic acid or a derivative thereof with an amine of the general formula wherein R<SP>2</SP> and R<SP>3</SP> are as above.
Patent GB-308238-A (GB)
Title: Improvements in or relating to advertising devices
IPC: G09F13/14
Filed: 1927-12-20
Abstract: 308,238. Flood, H. R. Dec. 20, 1927. Signs. - Daylight reflector signs are adapted to display two or more advertising surfaces alternately. In the illustrated form different stencilled advertisements are carried on the two shorter sides of the triangular member f which is mounted on trunnions g and may be oscillated by mechanical or electrical means to exhibit the different stencils alternately. In the position shown, the light entering the open top b of the casing passes through the stencil e to the mirror h and is reflected through the open front c to the observer. The sign may be carried on a vehicle and operated by a known form of windscreen-wiper mechanism.
Patent GB-301317-A (GB)
Title: Improvements in simultaneous telegraphy and telephony systems
IPC: H04M11/06
Filed: 1928-11-24
Abstract: 301,317. Siemens & Halske Akt.-Ges. Nov. 26, 1927, [Convention date]. Multiplex telegraphs.-In a phantom system in which a side-circuit is connected to telegraph and telephone apparatus through low-pass and highpass filters s, k, a double-wound choke d is connected across the side-circuit in such manner as to act as a low ohmic resistance for the phantom circuit v and as a high-impedance shunt for the side circuit l, and the strong outgoing telegraph currents divide equally in each winding of the choke d (the line l being simulated by the network w, c) so that magnetization of the choke and consequent formation of harmonics is avoided. By adding to the shunt a secondary winding connected to the receiving instrument the telegraph circuit may be duplexed. The receiver in this arrangement is immune from high tensions on the line, and the transmitter also may be protected by coupling it inductively to the filter s. A separate telegraph phantom may be provided, and may be connected to the side circuit by a separate double-wound shunt.
Patent GB-448255-A (GB)
Title: Improvements in or relating to electric circuit breakers
IPC: H01H71/24
Filed: 1934-12-03
Abstract: 448,255. Electromagnetic switches. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. Dec. 3, 1934, No. 34712. Convention. date, Dec. 1, 1933. Addition to 405,000. [Class 38 (v)] In the electromagneti.cally-operated excesscurrent switch described in the parent Specification in which a constantly-energized or voltage winding is used in conjunction. with the main current holding winding, the magnet core of this voltage winding is so arranged that the switch operates in a very short time with increasing current in one direction whereas the time of operation is very much longer with correspondingly rapidly increasing current in the other direction. As shown, the voltage winding G is mounted on a core F which bridges the limbs of the core B carrying the main current holding electromagnet K. The armature C is normally held against the polepieces of the holding magnet C, being torn off and moved to engage the contact-member or contact-operating member D with lost motion by the preponderance of the main current releasing magnet H on the core A. The instant of release with rapidly increasing current is determined by the interrelation in the armature and across the holding and releasing air gaps of the fluxes due to the currents in the main holding and releasing coils H and K, and that in the constant voltage winding G with the addition of a current induced in the latter winding due to the transformer action of the changing of current in the holding winding, the flux causing this additional current being forced out of the armature into the core of the holding magnet. The reversal of this additional induced current in relation to the constant current caused by reverse flow of the main current has the effect of producing a rapid release of the switch with increasing current in one direction and a relatively much longer time of release with correspondingly increasing current in the opposite direction. The disposition of the various fluxes in the magnetic circuits and the theoretical considerations underlying these operations are set forth in the Specification. A switch of the type described may be employed in conjunction with are rectifiers to produce a rapid release on back firing. To accentuate the transformer action between the main holding electromagnet and the constantlyenergized voltage winding a transformer may be employed having its primary in the main circuit and its secondary in the voltage circuit. This provides a means for time grading the operations of a series of switches for the same current variations.
Patent GB-1235147-A (GB)
Title: Improvements relating to pneumatic tyres
IPC: B60C13/02
Filed: 1968-07-22
Abstract: 1,235,147. Radial ply tyres. UNIROYAL ENGLEBERT FRANCE. 22 July, 1968 [24 July, 1967], No. 34844/68. Heading B7C. A radial ply pneumatic tyre is provided with a supplementary tyre cord ply structure 30 comprising a single ply of parallel textile cords inclined at between 0 and 60 degrees to the mid-circumferential plane of the tyre, this supplementary ply being folded back on itself, 31, 32 and extending into at least one sidewall beyond the axial limit of the breaker structure 29. One or both of the turned-up edges 31a, 32a may extend into the crown region of the under-tread (Fig. 3, not shown), and there may be two supplementary plies (Figs. 4, 5, not shown), one corresponding to each sidewall. In a tyre with a separate carcass ply corresponding to each sidewall wherein these two carcass plies have their respective edges axially separate in the crown region (Fig. 9, not shown), a supplementary ply structure is provided radially inward of these carcass plies. In. all these embodiments either or both carcass ply bead turnup portions may extend some way into a lower sidewall region and be folded back upon itself. The portion of the sidewall that is not reinforced by either the supplementary ply or the foldedback portion of the carcass ply may be reduced in thickness.